the official term that you guys just used, blue alert. like the better known amber alert, this goes out to the general public. you see some of them here. this is lit up over interstate 80 in hercules. following a violent attack on a law enforcement offer, like this case, it's designed to get as many eyes as possible looking for the suspect and the suspect vehicle for a safe and hopefully swift capture. we have a picture released by the irvine police department showing both the truck and the suspect. though the alert started in southern california, it's statewide search. the suspect is said to be armed and dangerous. like the sign says, call 911 if you see a truck that matched that description. the gray nissan titan pick-up. police say it's quite possible that he has switched the license plates out by now. tips are coming in. there's a lot of information to vet. but thank you all for calling in, again, as the officers have said, call 911. don't do anything else but call 911. back to you. >> you can logon to nbcbayarea.com for the latest. >